Caravel: Airbnb’s Data Exploration Platform — A data exploration platform designed to be visual, intuitive and interactive. The video and screenshots are very appealing. Caravel allows visualization-based exploration of data while performing fast “slicing and dicing” against any dataset.

Citus Unforks From PostgreSQL, Goes Open Source — Citus Data has released Citus 5.0 which comes along with two major announcements. The first is it’s entirely an extension, making it the first distributed databased to not fork Postgres but use native extension APIs. The second, it’s now open source.

Citus Data

SQL: How to Create An Execution Plan — When you’re trying to get SQL to run faster, there’s one thing that’s vital: an execution plan. In this post Chris Saxon investigates how to create yours.

Oracle tutorial

What is Blockchain? — A primer for people just starting to wrap their heads around blockchain, a type of distributed database that maintains an expanding ledger of data and records.